111993804 has 72 divisors (see below), whose sum is σ = 309948912. Its totient is φ = 33886080.

The previous prime is 111993787. The next prime is 111993811. The reversal of 111993804 is 408399111.

It is a super-2 number, since 2×111993804² = 25085224268780832, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26587 + ... + 30509.

It is an arithmetic number, because the mean of its divisors is an integer number (4304846).

Almost surely, 2^111993804 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111993804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154974456).

111993804 is an abundant number, since it is smaller than the sum of its proper divisors (197955108).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111993804 is a wasteful number, since it uses less digits than its factorization.

111993804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4007 (or 4002 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 111993804 is about 10582.7125067253. The cubic root of 111993804 is about 482.0195638369.

The spelling of 111993804 in words is "one hundred eleven million, nine hundred ninety-three thousand, eight hundred four".